CN2831523Y - Lighting protection coaxial adapter - Google Patents
Lighting protection coaxial adapter Download PDFInfo
- Publication number
- CN2831523Y CN2831523Y CN 200520035217 CN200520035217U CN2831523Y CN 2831523 Y CN2831523 Y CN 2831523Y CN 200520035217 CN200520035217 CN 200520035217 CN 200520035217 U CN200520035217 U CN 200520035217U CN 2831523 Y CN2831523 Y CN 2831523Y
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- CN
- China
- Prior art keywords
- transmission line
- cylindrical rod
- characteristic impedance
- circular hole
- external diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a lighting protection coaxial adapter which comprises a transmission line, wherein the transmission line is composed of an outer conductor, an inner conductor and an insulating medium positioned between the inner and the outer conductors; a branch line for bleeding lightning is connected to the transmission line; the branch line is composed of the outer conductor and the inner conductor; the electrical length of an end short circuit is a fourth of the operating wavelength of a transmission system. The lightning protection coaxial adaptor is provided with a frequency compensation structure or/and a characteristic impedance matching structure. When the characteristic impedance on both ends of the transmission system is identical and the size of adapters on both ends is different, or the characteristic impedance on both ends of the transmission system is different and the size of the adapters on both ends is also different, good signal transmission effect both can be guaranteed.
Description
Technical field
The utility model belongs to coaxial adatpter, particularly a kind of coaxial adatpter with lightning protection function.
Background technology
Coaxial adatpter is widely used a kind of interface unit on the transmission circuit.In some Wireless Telecom Equipments,, therefore also just used different coaxial connectors owing to reasons such as through-put power size have often been used different coaxial cables in the prime of system with the back level.A kind of situation is that the inner conductor outer diameter and the outer conductor internal diameter of the coaxial connector of prime and back level has nothing in common with each other, but characteristic impedance is identical.Another kind of situation is that inner conductor outer diameter and outer conductor internal diameter have nothing in common with each other, and characteristic impedance is also inequality.For the reliable connection between the coaxial connector of realizing different size, used the two ends can be respectively and the reliable coaxial adatpter that connects of different coaxial connectors.
In order to protect communication equipment, the overvoltage surge of avoiding lightning induction to bring damages transceiver, and prior art is that the antenna feeder Surge Protector is set in transmission system.And it is big to use coaxial adatpter and Surge Protector, institute to take up space in a transmission system simultaneously, and trouble is installed, and expense is also high.
Summary of the invention
The utility model provides a kind of existing coaxial signaling transfer point that the lightning protection coaxial adatpter of surge protection function is arranged again at the deficiency that prior art exists.
The technical solution of the utility model is: described lightning protection coaxial adatpter is that common coaxial adatpter and λ/4 antenna feeder Surge Protectors are carried out integrated design; existing coaxial signaling transfer point; anti-surge defencive function is arranged again; it comprises by outer conductor, is assembled in the transmission line that inner wire in the outer conductor endoporus and the dielectric between internal and external conductor constitute; be connected with the branch line of the thunder and lightning of releasing on the transmission line; this branch line is made up of outer conductor and the inner wire that is arranged in the outer conductor endoporus; terminal short circuit, its electrical length l
1Be 1/4 of transmission system operation wavelength.
The connector size at and two ends identical when the characteristic impedance at transmission system two ends not simultaneously, the structural design of lightning protection coaxial adatpter should be considered the compensation problem of frequency response, to guarantee laser propagation effect.Concrete structure is: the line characteristic impedance that internal and external conductor constitutes is identical, the outer conductor of transmission line is that two sections circular hole pipe fittings of D1, D2 form by internal diameter, D1＞D2, the inner wire of transmission line are that two sections cylindrical rod members of d1, d2 form d1＞d2 by external diameter; Internal diameter is that the circular hole pipe fitting of D1 and cylindrical rod member that external diameter is d1 are combined into transmission line I, and internal diameter is that the circular hole pipe fitting of D2 and cylindrical rod member that external diameter is d2 are combined into transmission line II, and the characteristic impedance of transmission line I is identical with the characteristic impedance of transmission line II; External diameter is that the interface of the cylindrical rod member of d1 and the cylindrical rod member that external diameter is d2 is that the annular end face of the circular hole pipe fitting inboard of D1 has one to be used for frequency compensated separation delta 1 with respect to internal diameter.The size of Δ 1, the characteristic impedance decision of the transmission line that constitutes by internal and external conductor, when the line characteristic impedance that constitutes when internal and external conductor was 50 Europe/50 Europe or 75 Europe/75 Europe, Δ 1 was (1～4) mm.
When the connector size at the characteristic impedance difference at transmission system two ends and two ends not simultaneously yet, in order to guarantee laser propagation effect, the structural design of lightning protection coaxial adatpter both should have been considered the compensation of frequency response, should consider the coupling connectivity problem between two sections different transmission lines of characteristic impedance again.Concrete structure is: the transmission line that internal and external conductor constitutes has different characteristic impedances, the outer conductor of transmission line is that two sections circular hole pipe fittings of D1, D2 form by internal diameter, D1＞D2, the inner wire of transmission line are that three sections cylindrical rod members of d1, d3, d2 form d1＞d3＞d2 by external diameter; Internal diameter is that the circular hole pipe fitting of D1 and cylindrical rod member that external diameter is d1 are combined into transmission line I, and internal diameter is that the circular hole pipe fitting of D2 and cylindrical rod member that external diameter is d2 are combined into transmission line II, and the characteristic impedance of transmission line I is different with the characteristic impedance of transmission line II; External diameter is that the cylindrical rod member of d3 is the impedance matching section, the circular hole pipe fitting that is positioned at internal diameter and is D1 forms the characteristic impedance transition region, and itself and external diameter are that the interface of the cylindrical rod member of d2 is that the annular end face of the circular hole pipe fitting inboard of D1 has one to be used for frequency compensated separation delta 2 with respect to internal diameter.The length l of impedance matching section
2Be (30～60) mm; The size of Δ 2, the characteristic impedance decision of the transmission line that constitutes by internal and external conductor, when the line characteristic impedance that constitutes when internal and external conductor was 50 Europe/70 Europe or 75 Europe/50 Europe, Δ 2 was (1～3) mm.
The utlity model has following beneficial effect:
1, the branch line that on the transmission line of coaxial adatpter, has connected the thunder and lightning of releasing, thereby existing coaxial signaling transfer point has the surge protection function again.
2, use lightning protection coaxial adatpter described in the utility model; compare with coaxial adatpter with using independently λ/4 Surge Protectors, a transmission system can reduce by 1 coaxial connector, has both saved expense; reduce shared space again, can also simplify installation procedure.
3, the lightning protection coaxial adatpter has the frequency compensation structure or/and the characteristic impedance matching structure, the connector sizes at and two ends identical when the characteristic impedance at transmission system two ends different or when the connector size at the characteristic impedance difference at transmission system two ends and two ends not simultaneously yet, can guarantee that all the laser propagation effect of signal is good.
Description of drawings
Fig. 1 is a kind of structure chart of lightning protection coaxial adatpter described in the utility model;
Fig. 2 is another structure chart of lightning protection coaxial adatpter described in the utility model.
Among the figure, cylindrical rod member and external diameter that the annular end face of the circular hole pipe fitting inboard that the interface that cylindrical rod member that the branch line of 1-outer conductor, 2-inner wire, 3-dielectric, the 4-thunder and lightning of releasing, 5-external diameter are d1 and external diameter are the cylindrical rod member of d2,6-internal diameter are D1,7-external diameter are d3 are the interface of the cylindrical rod member of d2.
Embodiment
Embodiment 1
The structure of the described lightning protection coaxial adatpter of present embodiment constitutes transmission line by outer conductor 1, the inner wire 2 and the dielectric between internal and external conductor 3 that are assembled in the outer conductor endoporus as shown in Figure 1.The outer conductor 1 of transmission line is that two sections circular hole pipe fittings of D1, D2 form (D1＞D2), D1=16mm, D2=12mm by internal diameter; The inner wire 2 of transmission line is that two sections cylindrical rod members of d1, d2 form (d1＞d2), d1=7mm, d2=5.2mm by external diameter; Internal diameter is that the circular hole pipe fitting of D1 and cylindrical rod member that external diameter is d1 are combined into transmission line I, its characteristic impedance Z1=50 Europe; Internal diameter is that the circular hole pipe fitting of D2 and cylindrical rod member that external diameter is d2 are combined into transmission line II, its characteristic impedance Z2=50 Europe; External diameter is that the interface 5 of the cylindrical rod member of d1 and the cylindrical rod member that external diameter is d2 is that the annular end face 6 of the circular hole pipe fitting inboard of D1 has one to be used for frequency compensated separation delta 1=2mm with respect to internal diameter.Be connected with the branch line 4 of the thunder and lightning of releasing on transmission line II, this branch line is made up of outer conductor and the inner wire that is arranged in the outer conductor endoporus, terminal short circuit, and its electrical length l1 is 1/4 of transmission system operation wavelength, i.e. 40mm.Constituting the outer conductor 1 of transmission line and the outer conductor of branch line 4 is copper alloy or aluminium alloy manufacturing, constitutes the inner wire 2 of transmission line and the inner wire of branch line 4 and is made by the rubber-like copper alloy, and dielectric 3 is by the fluoroplastics manufacturing.
The described lightning protection coaxial adatpter of present embodiment performance index are as follows:
Operating frequency: (1700～2400) MHz,
Standing-wave ratio≤1.15,
Insert loss≤0.1dB,
Maximum discharge current 8/20 μ s:40kA.
Embodiment 2
The structure of the described lightning protection coaxial adatpter of present embodiment constitutes transmission line by outer conductor 1, the inner wire 2 and the dielectric between internal and external conductor 3 that are assembled in the outer conductor endoporus as shown in Figure 2.The outer conductor 1 of transmission line is that two sections circular hole pipe fittings of D1, D2 form (D1＞D2), D1=16mm, D2=12mm by internal diameter; The inner wire 2 of transmission line is that three sections cylindrical rod members of d1, d3, d2 form (d1＞d3＞d2), d1=7mm, d3=5.78mm, d2=3.42mm by external diameter; Internal diameter is that the circular hole pipe fitting of D1 and cylindrical rod member that external diameter is d1 are combined into transmission line I, its characteristic impedance Z1=50 Europe; Internal diameter is that the circular hole pipe fitting of D2 and cylindrical rod member that external diameter is d2 are combined into transmission line II, its characteristic impedance Z2=75 Europe; External diameter is that the cylindrical rod member of d3 is the impedance matching section, and being positioned at internal diameter is the circular hole pipe fitting formation characteristic impedance transition region of D1, its characteristic impedance Z3=61 Europe, and when frequency is 3000MHz, length of transition zone l
2For about 30mm; External diameter is that the interface 7 of the cylindrical rod member of d3 and the cylindrical rod member that external diameter is d2 is that the annular end face 6 of the circular hole pipe fitting inboard of D1 has one to be used for frequency compensated separation delta 2=1.5mm with respect to internal diameter.Be connected with the branch line 4 of the thunder and lightning of releasing on transmission line I, this branch line is formed terminal short circuit, its electrical length l by outer conductor and the inner wire that is arranged in the outer conductor endoporus
1Be 1/4 of transmission system operation wavelength, i.e. 30mm.Constituting the outer conductor 1 of transmission line and the outer conductor of branch line 4 is copper alloy or aluminium alloy manufacturing, constitutes the inner wire 2 of transmission line and the inner wire of branch line 4 and is made by the rubber-like copper alloy, and dielectric 3 is by the fluoroplastics manufacturing.
The described lightning protection coaxial adatpter of present embodiment performance index are as follows:
Operating frequency: (2850～3150) MHz,
Standing-wave ratio≤1.2,
Insert loss :≤0.15dB,
Maximum discharge current 8/20 μ s:60kA.
The utility model is not limited to the foregoing description, and the characteristic impedance of its input and output can be 75 Ω-75 Ω, 75 Ω-50 Ω and 50 Ω-70 Ω, also can be other off-gauge characteristic impedance values.The model of its input and output connector can be DIN7/16-N, DIN7/16-TNC, N-TNC, N-SMA, N-SMB, TNC-SMA and TNC-SMB etc.
Claims (6)
1, a kind of lightning protection coaxial adatpter, comprise by outer conductor (1), be assembled in the transmission line that inner wire (2) in the outer conductor endoporus and the dielectric between internal and external conductor (3) constitute, it is characterized in that also comprising the branch line (4) that is connected the thunder and lightning of releasing on the transmission line, this branch line is made up of outer conductor and the inner wire that is arranged in the outer conductor endoporus, terminal short circuit, its electrical length l
1Be 1/4 of transmission system operation wavelength.
2, lightning protection coaxial adatpter according to claim 1, the outer conductor (1) that it is characterized in that transmission line is D1 by internal diameter, two sections circular hole pipe fittings of D2 form, D1＞D2, the inner wire of transmission line (2) is d1 by external diameter, two sections cylindrical rod members of d2 form, d1＞d2, internal diameter is that the circular hole pipe fitting of D1 and cylindrical rod member that external diameter is d1 are combined into transmission line I, internal diameter is that the circular hole pipe fitting of D2 and cylindrical rod member that external diameter is d2 are combined into transmission line II, the characteristic impedance of transmission line I is identical with the characteristic impedance of transmission line II, and external diameter is the cylindrical rod member of d1 and interface (5) that external diameter is the cylindrical rod member of d2 with respect to internal diameter is that the annular end face (6) of the circular hole pipe fitting inboard of D1 has one to be used for frequency compensated separation delta 1.
3, lightning protection coaxial adatpter according to claim 2 is characterized in that Δ 1 is 1mm～4mm when line characteristic impedance that internal and external conductor constitutes is 50 Europe/50 Europe or 75 Europe/75 Europe.
4, lightning protection coaxial adatpter according to claim 1, the outer conductor (1) that it is characterized in that transmission line is D1 by internal diameter, two sections circular hole pipe fittings of D2 form, D1＞D2, the inner wire of transmission line (2) is d1 by external diameter, d3, three sections cylindrical rod members of d2 form, d1＞d3＞d2, internal diameter is that the circular hole pipe fitting of D1 and cylindrical rod member that external diameter is d1 are combined into transmission line I, internal diameter is that the circular hole pipe fitting of D2 and cylindrical rod member that external diameter is d2 are combined into transmission line II, the characteristic impedance of transmission line I is different with the characteristic impedance of transmission line II, external diameter is that the cylindrical rod member of d3 is the impedance matching section, the circular hole pipe fitting that is positioned at internal diameter and is D1 forms the characteristic impedance transition region, and itself and external diameter are that the interface (7) of the cylindrical rod member of d2 is that the annular end face (6) of the circular hole pipe fitting inboard of D1 has one to be used for frequency compensated separation delta 2 with respect to internal diameter.
5, lightning protection coaxial adatpter according to claim 4 is characterized in that the length l of impedance matching section
2Be 30mm～60mm.
6,, it is characterized in that Δ 2 is 1mm～3mm when line characteristic impedance that internal and external conductor constitutes is 50 Europe/70 Europe or 75 Europe/50 Europe according to claim 4 or 5 described lightning protection coaxial adatpters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035217 CN2831523Y (en) | 2005-08-22 | 2005-08-22 | Lighting protection coaxial adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035217 CN2831523Y (en) | 2005-08-22 | 2005-08-22 | Lighting protection coaxial adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2831523Y true CN2831523Y (en) | 2006-10-25 |
Family
ID=37136443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520035217 Expired - Lifetime CN2831523Y (en) | 2005-08-22 | 2005-08-22 | Lighting protection coaxial adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2831523Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064396A (en) * | 2010-11-01 | 2011-05-18 | 华为技术有限公司 | Coaxial cable connector |
| CN103904482A (en) * | 2014-04-05 | 2014-07-02 | 郑州航天电子技术有限公司 | Axial floating structure of coaxial contact element |
| WO2015058603A1 (en) * | 2013-10-22 | 2015-04-30 | 芯迪半导体科技（上海）有限公司 | Surge protection circuit |
-
2005
- 2005-08-22 CN CN 200520035217 patent/CN2831523Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064396A (en) * | 2010-11-01 | 2011-05-18 | 华为技术有限公司 | Coaxial cable connector |
| CN102064396B (en) * | 2010-11-01 | 2013-04-24 | 华为技术有限公司 | Coaxial cable connector |
| WO2015058603A1 (en) * | 2013-10-22 | 2015-04-30 | 芯迪半导体科技（上海）有限公司 | Surge protection circuit |
| CN103904482A (en) * | 2014-04-05 | 2014-07-02 | 郑州航天电子技术有限公司 | Axial floating structure of coaxial contact element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SICHUAN ZHONGGUANG LIGHTNING PROTECTION TECHNOLOGY Free format text: FORMER OWNER: WANG DEYAN Effective date: 20110114 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 610021 7F, JINJIANG EDUCATION CENTER, NO. 2, TIANXIANQIAO SOUTH ROAD, CHENGDU CITY, SICHUAN PROVINCE TO: 611731 NO. 19, TIANYU ROAD, WESTERN PARK, HIGH-TECH. ZONE, CHENGDU CITY, SICHUAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110114 Address after: Tianyu Chengdu road 611731, Sichuan province high tech Zone West Park No. 19 Patentee after: Sichuan Zhongguang Lightning Protection Technologies Co., Ltd. Address before: 610021 Jinjiang Education Center, 2 South Bridge Road, Chengdu, Sichuan 7F Patentee before: Wang Deyan |
|
| CX01 | Expiry of patent term |
Expiration termination date: 20150822 Granted publication date: 20061025 |
|
| EXPY | Termination of patent right or utility model |